Two containers, x and y, both contain nitrogen gas at a temperature of 30° c and a pressure of 1 atm. the initial volume of each of the containers is v30 = 0.5 liters. the only difference between the two containers is that while container x has a piston that is sealed and cannot move, the gas in container y is allowed to expand against the surrounding atmosphere. qx is the amount of heat required to raise the temperature of the gas in container x by 10° c, and qy is the amount of heat required to raise the temperature of the gas in container y by 10° c. what is the difference between qx and qy? use 0°c = 273.15 k qx - qy =

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle